﻿using System;
using System.Data;
using System.Data.SqlClient;

class ProcessQueueInterface
{
    static void Main()
    {
        ProcessQueueInterface spd = new ProcessQueueInterface();

        // run a simple stored procedure
        spd.RunStoredProc();

        // run a stored procedure that takes a parameter
        spd.RunStoredProcParams();
    }

    // run a simple stored procedure
    public void RunStoredProc()
    {
        SqlConnection conn = null;
        SqlDataReader rdr = null;

        Console.WriteLine("\nTop 10 Most Expensive Products:\n");

        try
        {
            // create and open a connection object
            conn = new
                SqlConnection("Server=(local);DataBase=Northwind;Integrated Security=SSPI");
            conn.Open();

            // 1.  create a command object identifying
            //     the stored procedure
            SqlCommand cmd = new SqlCommand(
                "Ten Most Expensive Products", conn);

            // 2. set the command object so it knows
            //    to execute a stored procedure
            cmd.CommandType = CommandType.StoredProcedure;

            // execute the command
            rdr = cmd.ExecuteReader();

            // iterate through results, printing each to console
            while (rdr.Read())
            {
                Console.WriteLine(
                    "Product: {0,-25} Price: ${1,6:####.00}",
                    rdr["TenMostExpensiveProducts"],
                    rdr["UnitPrice"]);
            }
        }
        finally
        {
            if (conn != null)
            {
                conn.Close();
            }
            if (rdr != null)
            {
                rdr.Close();
            }
        }
    }

    // run a stored procedure that takes a parameter
    public void RunStoredProcParams()
    {
        SqlConnection conn = null;
        SqlDataReader rdr = null;

        // typically obtained from user
        // input, but we take a short cut
        string custId = "FURIB";

        Console.WriteLine("\nCustomer Order History:\n");

        try
        {
            // create and open a connection object
            conn = new
                SqlConnection("Server=(local);DataBase=Northwind;Integrated Security=SSPI");
            conn.Open();

            // 1.  create a command object identifying
            //     the stored procedure
            SqlCommand cmd = new SqlCommand(
                "CustOrderHist", conn);

            // 2. set the command object so it knows
            //    to execute a stored procedure
            cmd.CommandType = CommandType.StoredProcedure;

            // 3. add parameter to command, which
            //    will be passed to the stored procedure
            cmd.Parameters.Add(
                new SqlParameter("@CustomerID", custId));

            // execute the command
            rdr = cmd.ExecuteReader();

            // iterate through results, printing each to console
            while (rdr.Read())
            {
                Console.WriteLine(
                    "Product: {0,-35} Total: {1,2}",
                    rdr["ProductName"],
                    rdr["Total"]);
            }
        }
        finally
        {
            if (conn != null)
            {
                conn.Close();
            }
            if (rdr != null)
            {
                rdr.Close();
            }
        }
    }
}